Karl Ludwig von Guttenberg was a catholicmonarchist who started publishing the "White Papers; Journals on History, Tradition and State" (formerly called "Monarchy") in 1934. Amongst its authors were Reinhold Schneider, Jochen Klepper, Ulrich von Hassell and Werner Bergengruen. The White Papers (in German: "Weiße Blätter") soon became an important organ and also a meeting place, through their publishers many various contacts, for the conservative opposition against the Nazi regime under Hitler. Karl Ludwig Freiherr von und zu Guttenberg first introduced Carl Goerdeler and Ulrich von Hassell to each other in 1939.